From 58ef912c6babf1866193ab04674a5866dd761f13 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Wed, 22 Apr 1998 12:58:34 +0000
Subject: First look at data structures. More to come tomorrow...

---
 lib/birdlib.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 lib/birdlib.h

(limited to 'lib/birdlib.h')

diff --git a/lib/birdlib.h b/lib/birdlib.h
new file mode 100644
index 0000000..fb4814f
--- /dev/null
+++ b/lib/birdlib.h
@@ -0,0 +1,17 @@
+/*
+ *	BIRD Library
+ *
+ *	(c) 1998 Martin Mares <mj@ucw.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#ifndef _BIRD_BIRDLIB_H_
+#define _BIRD_BIRDLIB_H_
+
+/* Ugly structure offset handling macros */
+
+#define OFFSETOF(s, i) ((unsigned int)&((s *)0)->i)
+#define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i)))
+
+#endif
-- 
cgit v1.2.3